DE279024C - - Google Patents
Info
- Publication number
- DE279024C DE279024C DENDAT279024D DE279024DA DE279024C DE 279024 C DE279024 C DE 279024C DE NDAT279024 D DENDAT279024 D DE NDAT279024D DE 279024D A DE279024D A DE 279024DA DE 279024 C DE279024 C DE 279024C
- Authority
- DE
- Germany
- Prior art keywords
- line
- contact
- circuit
- electromagnet
- armature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/68—Circuit arrangements for preventing eavesdropping
- H04M1/70—Lock-out or secrecy arrangements in party-line systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE279024C true DE279024C (cs) |
Family
ID=534974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT279024D Active DE279024C (cs) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE279024C (cs) |
-
0
- DE DENDAT279024D patent/DE279024C/de active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE279024C (cs) | ||
| DE143033C (cs) | ||
| DE139401C (cs) | ||
| DE153326C (cs) | ||
| DE173836C (cs) | ||
| DE200536C (cs) | ||
| DE363601C (de) | Weckereinrichtung fuer Fernsprechanlagen | |
| DE158537C (cs) | ||
| DE419289C (de) | Schaltungsanordnung fuer den wahlweisen Anschluss einer von zwei an einer gemeinsamen Leitung liegenden Teilnehmerstellen unter Wahrung des Gespraechgeheimnisses | |
| DE123710C (cs) | ||
| DE263466C (cs) | ||
| DE237566C (cs) | ||
| DE226463C (cs) | ||
| AT7049B (de) | Schaltungsanordnung zum selbstatthätigen Anrufen von Theilnehmerstellen durch Fernsprechvermittelungsämter. | |
| DE114778C (cs) | ||
| DE117996C (cs) | ||
| DE61697C (de) | Vorrichtung zum selbstthätigen doppelten Verzeichnen von Ferngesprächen | |
| DE583068C (de) | Schaltungsanordnung fuer Fernsprechanlagen | |
| AT55798B (de) | Schaltung für Wähler selbsttätiger oder halbselbsttätiger Fernsprechanlagen. | |
| DE195495C (cs) | ||
| DE173487C (cs) | ||
| DE152462C (cs) | ||
| DE118874C (cs) | ||
| AT34884B (de) | Elektromagnetischer Fernschalter zur selbsttätigen Herstellung von Fernsprechverbindungen. | |
| DE234055C (cs) |